b) Below is a small assembly language program. 1000H MOV TMOD, #01D TLO, #FFH HERE: MOV MOV THO, #10H CPL P1.0 ACALL DELAY SJMP HERE ORG

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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question ii please help........

b) Below is a small assembly language program.
1000H
MOV TMOD, #01D
TLO, #FFH
THO, # 10H
P1.0
ACALL DELAY
SJMP HERE
ORG
HERE: MOV
MOV
CPL
DELAY:
1LOOP:
END
i)
ii)
SETB TRO
JNB
CLR
CLR
RETI
TF0, 1LOOP
TRO
TFO
The program has four errors. Identify and state how you would correct them.
Briefly describe the behaviour of the program paying particular attention to the
configuration and operation of Timer 0.
iii) Assuming the amended code is run on a classic 8051 using a 12 MHz crystal,
estimate the period of the waveform on P1.0.
Transcribed Image Text:b) Below is a small assembly language program. 1000H MOV TMOD, #01D TLO, #FFH THO, # 10H P1.0 ACALL DELAY SJMP HERE ORG HERE: MOV MOV CPL DELAY: 1LOOP: END i) ii) SETB TRO JNB CLR CLR RETI TF0, 1LOOP TRO TFO The program has four errors. Identify and state how you would correct them. Briefly describe the behaviour of the program paying particular attention to the configuration and operation of Timer 0. iii) Assuming the amended code is run on a classic 8051 using a 12 MHz crystal, estimate the period of the waveform on P1.0.
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